Reenforcing stirrup assembly



Patented 'ugr 12, 1930Y :Ummsm-:S

WILLIAM'Q. BARBER, oF no` clin-'iranien' j REENFonc/:ING s'rfaiin l y i Y I Y` Application med August a1,*1 a 7. seal' rmfaijck'ze.

My invention relates to building specialties and more particularly to reenforeing devices for use in the construction of concrete building, bridges, etc. and the method of using said devices.

In connection with` reenforced concrete construction more or less difficulty is experil enced by builders in liXing thereenforcing metal within the forms so. that itwill not shift out of place when the concrete is being poured. Tying is usually resorted to, kbut this involves a considerable amount of extra labor and is not always effective.

' The primary objeetof my invention is to provide reenforcing devices,'espeoially adapted for use in the construction of reenforced concrete beams; Vgirders and the like, which readily may be placed in the usual forms so that Without being tied they willreinain in properly spaced relation thereto when the concrete is being poured and wliileit issetting. i 7

A further object is to provide means and a method whereby certain kinds of reenforeed concrete construction jobs may be done satisfactorily with a considerable saving in time and labor over present methods.-

` Other objects and advantages will appear f signed for use with the stirrup assembly shown in Fig. l. n

Fig. 3 is a side View of a tie device for holding in alignment theparts of a form such as is usedy in the construction of'concrete beams, girders and walls; Y

Fig. 4 is a fragmentary view in perspective o f a form for a concrete beam Aillustrating fthe" usef ofl tiefdvieel Y 7 The 7 re'enforoing. stirrup assembly A1 shown v inz'Fi'g'x Pl 5ieonsist's of 'a` series' `ofU-shaped pieces 110 of reenforcing rodfmetalytlie ends 4vF55 "of `the upright parts' lof which are bent to formj anchory pinsn 12. These `.lJ-shaped 'piecesA are 'arranged to extend i transversely of the beam andare held' rigidlyrin`Y Vparallel lspacedrelation to eachf'otherbya straight 5.60 7

longitudinal tie-bar l''fwhichis electrically` 'welded' to the crossbars '14 thereof,"v at their `in iddle points :and `on` their f upper sides. Such stirrup.` assemblies are made in lengthsy convenient' for handling and placinginf the Aforms.- L

ffiThe chair device sho'wninFig` Q'is'madefv 7,

lsimilar :but somewhat` lighter .meta-l,4 ,rela` .tively shortpieees offwhieh are bent lat their.`

ymiddle points 'into leg-piece`s f 15 havinggthe 70 'formof aninvertedl'etter V.' vSeveralxisuch *leg-pieces of equal-size are fheld` in suitably @spaced and" parallel relation to4 `each lyother by' a transverse tie-bar '17 which is Velectriea'l- -ly Welded to one side of each ata pointso'iile-A 75 Ewhat below the `bend or verteXflG' thereof.4

The length ofga thetie-bar corresponde".l approximately vtot'n the internal .width goftle fr .fformvin which it isto be `used andlegpieces -15' arearrange'diinpairs, onek pair fbeingf'near each-end as shown; and Lothers vatgiritervals Abetween them, in cases requiringfmo're"than itwo. suoli pairs; i The spaces 41,9between the' f two'ipieees *1510i each` pairisirnade to :corre-Y; i ""spnd'to the kthickness fof the supplementary "g8 'reenforeing materialiv toV be 1 used ini the {con- 'strucltion' as'y I willy presently ,apipear. j {The spacing fromthe `ends of tie-bar l17' is such as to leave projecting ends 18 whichfserve toy 5.90 Y hold the chair-devioe-properly Centered.vvith-`k 4in the form and tobring spaces `19just/inside ftlieupriglits ofthe stirrup assembly, The ftie devieelshovvn inlFigfB is-made preferably 'of heavyjwire; yairelatively''Along tie-piee" 20, 95

somewhat longer than the external width'lof `thel formpin is to be usefchf two' V pairsy of short.; pieces 21, electrioally wl-ded thereon at right A,z'i`I'iglr-is`- Y`tliereto,y`one pair1 ad .aeeeheewhen .The were 100 i my salir@ iasjseilibiy; their I alle ieces 21, of each pair, are spaced apart a -stance corresponding to the thickness of the lumber 22 used in the construction of the Sides of the form. Y

The use of my stirrup assembly, chair device and tie device, is clearly illustrated in Fi L. The tie .devices are placed ab interva between theupper and lower ieces and on the top piece of the side lum er 22 as shown, and serve to prevent anyrspreading' or bulging of theform, *thus saving'a con# siderable part of the labor and material usuallyjemployed in stiiening and" bracing it;

The form having been. built-up, chair de-V reenforcing' bars in properly relation tothe bottom and sides of the no sidewise shifting being possible *imei the'contact of project' ends 18 of transverse tie-bars17 with the si es of thel fltu'm.A Longitudnalbars 23v are held by the upper ends of the chair'parts 15 and thestrmp assembly is held in turn by longitudinal u The form, thus equippedv withrednnrdngmetal, is'therefore in condition for pourm of. the concrete without further or" The concrete having gpwredand a owedto set the removal n otrthe side pieces22 ofthe form maybe ac- 4by cutting olf the projecting ends ottaepdeuw 20 oriby bending outside pieces lsemsto permit'thel lumberto be pulled out imm them. Thev chairv devices and amm are left imheddeiin the computa'dmlwtme to rve as' additional reenforcement'thmeto. y

'Y Whilelhaveshown. particular forms of strrup assembly and chair device, by way of U ummm, it should be understood that thereofmay be made to suit dierent structural r uiremefnts without det from the spintof: my invention as n Lthemfnre claim as myinvention:

Thecombiuation with reenforcing rods in wncretaheam constructiomof stirru units mdeof a. series of U-shapedchrodtshrelld in space relationto ea o y a `tie-weil'weldedthereto and chair units made of inverted V-shaped legs held inparallel spaced relation to each other by tie-rods weldedf thereto, said Vsha.ped legs being y 5 in pairs so that a reenforcing ro'd is y held between each pairin spacedV relation to the bottom of the form while resting on the tie-rod to which said legs are welded and being s aced'from the ends of said tie-rods so as to old theV reenforcing rods and through them said stirru units in spaced relation to Vthe sides of the orm.

WILLIAM C. BARBER.

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